Preethi Kasireddy, a blockchain engineer, walks us through how cryptocurrencies work, what developers should care about, and how she transitioned from a career in finance to being a blockchain engineer.

Richard Schneeman created Code Triage, where you can sign up for repos and get an open issue sent to your inbox. He talks about different ways first-timers can get started, and how small contributions can be incredibly impactful.

Carmen Aguilar y Wedge, one of the creators of the NeuroSpeculative AfroFeminism, a virtual reality experience that’s appeared at Sundance, Tribeca, and others, shares how she and her team at Hyphen Labs created this artistic and deeply technical exhibit.

Lara Hogan, who wrote the book on public speaking, and Kelsey Hightower, speaker and chair of tech conferences, share their personal speaking stories (and nightmares!), how they prepare their talks, and the mistakes they see first-time speakers make.